The elements of Euclid : viz, the first six books, together with the eleventh and twelfth : the errors, by which Theon, or others, have long ago vitiated these books, are corrected, and some of Euclid's demonstrations are restored : also, The book of Euclid's data, in like manner corrected (1834)
Euclid, Euclid, Simson, Robert, 1687-1768 · Philadelphia : Desilver & Thomas · leaf 75
be done. PROP, .XXVI. THEOR. In equal circles, equal angles stand upon equal cir-cumferences, whether they be at the centres or circum-ferences. Let ABC, DEF be equal circles, and the equal angles BGC,EHF at their centres, and BAC, EDF at their circumferences:the circumference BKC is equal to the… … C E
Mathematics, Greek · Geometry · Trigonometry
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